Two hunters were in the woods, and realized they were lost.
"Well, the safety course taught us that if you're lost you fire three times into the air every few minutes, it's a distress signal and someone will come help." said one.
"Okay, we'll try that" was the reply.
So for the next few hours, they did as they'd been taught. Nobody showed up.
As the sky got dark, the first hunter said "I'm getting worried now. It's dark, we haven't got camping equipment, and we're still lost."
The second hunter said, "Yeah, and we're nearly out of arrows."